The space effect on WIV interference between a fixed and oscillating diamond cylinder at a low Reynolds number of 100

Gu, W.; Xu, Xu; Wei, Naying; Yao, Wenjuan; Yu, Guoliang; Lian, Xuebiao; Gao, Jiayun; Zhou, Jing

doi:10.1016/j.oceaneng.2022.112428

Cited by 7 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The results show that a 2D-high (D is the diameter of the circular cylinder) plate placed around 0.2D-0.4D downstream of the circular cylinder has the most effective effect on energy conversion of the system. Gu et al [43] studied the effect of spacing on the vortex-induced vibration for two elastically tandem diamond cylinders, and in the numerical investigation, the nondimensional center-to-center gap ratio (G) varied from 2 to 6. The results show that the reattachment and co-shedding phenomenon appear when the spacing ratio is smaller (G = 2 and 3), but the co-shedding phenomenon only appears at a larger spacing ratio (G = 4-6).…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Flow-Induced Motion and Energy Conversion for Two Rigidly Coupled Triangular Prisms Arranged in Tandem

Lian

Shuai

et al. 2022

Energies

View full text Add to dashboard Cite

A series of experimental tests on flow-induced motion (FIM) and energy conversion of two rigidly coupled triangular prisms (TRCTP) in tandem arrangement were conducted in a recirculating water channel with the constant oscillation mass mosc. The incoming flow velocity covered the range of 0.395 m/s ≤ U ≤ 1.438 m/s, corresponding to the Reynolds number range of 3.45 × 104 ≤ Re ≤ 1.25 × 105. The upstream and downstream triangular prisms with a width of 0.1 m and length of 0.9 m were connected by two rectangular endplates. Seven stiffness (1000 N/m ≤ K ≤ 2400 N/m), five load resistances (8 Ω ≤ RL≤ 23 Ω), and five gap ratios (1 ≤ L/D ≤ 4) were selected as the parameters, and the FIM responses and energy conversion of TRCTP in tandem were analyzed and discussed to illustrate the effects. The experimental results indicate that the “sharp jump” phenomenon may appear at L/D = 2 and L/D = 3 significantly, with substantially increasing amplitude and decreasing oscillation frequency. The maximum amplitude ratio in the experiments is A*Max= 2.24, which appears after the “sharp jump” phenomenon at L/D = 3. In the present tests, the optimal active power Pharn = 21.04 W appears at L/D = 4 (Ur= 12.25, K = 2000 N/m, RL= 8 Ω), corresponding to the energy conversion efficiency ηharn= 4.67%.

show abstract

Section: Introductionmentioning

confidence: 99%